chore(deps): update dependency @astrojs/tailwind to v6 (#371)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

pnpm-lock.yaml

@@ -56,7 +56,7 @@
     "@astrojs/check": "^0.9.4",
     "@astrojs/node": "^9.0.0",
     "@astrojs/react": "^4.0.0",
-    "@astrojs/tailwind": "^5.1.3",
+    "@astrojs/tailwind": "^6.0.0",
     "@astrojs/vercel": "^8.0.0",
     "@atmx-org/registry": "workspace:*",
     "@svgr/core": "^8.1.0",